Term Kind Topic What it is
Open Table Format Apache Iceberg, Delta Lake, Apache Hudi protocol Data Lakes & Lakehouses A metadata layer over files in object storage that supplies ACID transactions, schema evolution and time travel — the thing that turns a data lake into a lakehouse.
Schema Evolution concept Data Lakes & Lakehouses Changing a table's structure over time while keeping existing data readable and existing consumers working.
Time Travel Data Versioning, Snapshot Query concept Data Lakes & Lakehouses Querying a table as it existed at a previous version or timestamp, made possible by keeping the metadata and files of prior commits.